a=[99,22,51,63,72,61,20,88,40,21,63,30,11,18,99,12,93,16,7,53,64,9,28,84,34,96,52,82,51,77]
ans=0
for i in range(30):
    for j in range(i,30):
        if a[i]*a[j]>=2022:
            ans+=1
print(ans)



